Year	Percent
1996-01-01	1.9109400000000000
1997-01-01	2.1650900000000000
1998-01-01	1.3310200000000000
1999-01-01	1.5089700000000001
2000-01-01	1.9582099999999998
2001-01-01	1.9292000000000000
2002-01-01	2.0862800000000000
2003-01-01	2.4149500000000000
2004-01-01	1.4915800000000000
2005-01-01	1.3096700000000001
2006-01-01	1.6022500000000000
2007-01-01	1.9009900000000002
2008-01-01	2.6024100000000000
2009-01-01	1.7489500000000000
2010-01-01	2.6916300000000000
2011-01-01	1.7904799999999998
2012-01-01	2.3521500000000000
2013-01-01	1.7582400000000002
2014-01-01	1.6716099999999998
2015-01-01	2.3535500000000000
2016-01-01	2.1935300000000000